I recently bought Prowl for my iPhone 4S, iOS 7.03. I am receiving row messages on my iPhone, but there are no 'pop-ups', or sounds. There are sounds only when the Prowl app is open and in front. Toggling 'Do not disturb' and 'Quiet hours' did not help. Any ideas?

I couldn't find Prowl on that list. I switched the language from my iPhone from Dutch to English to make sure I was looking in the right place. Then I saw Prowl. All settings were fine. Switched back to Dutch and I still see Prowl listed. And suddenly the sound works... Somehow it is fixed.